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The United States Air Force (USAF) is the air service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part of the United States Army Signal Corps, the USAF was established as a separate branch of the United States Armed Forces in 1947 with the enactment of the National Security Act of 1947.
Spirit, also known as MER-A, is a robotic rover on Mars, active from 2004 to 2010. It landed successfully within the impact crater Gusev on Mars at 04:35 Ground UTC on January 4, 2004, three weeks before its twin, Opportunity (MER-B), which landed on the other side of the planet. The rover became stuck in a "sand trap" in late 2009 at an angle that hampered recharging of its batteries; its last communication with Earth was sent on March 22, 2010.
Height 38.90 Meters
Max Stages 3
Mass To GTO 1840 kg
Liftoff Thrust 0 kN
Diameter 2.40 Meters
Mass To LEO 0 kg
Liftoff Mass 232 Tonnes
Launch Success 26
Consecutive Success 26
Maiden Flight 1998-01-10
Launch Failures 0
2025-03-25T20:31:51+0000
NASA
2024-01-17T18:10:00+0000
NASA